-- Comparison Table

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-- comparison table

Subject use in have example has definition have purpose is a kind of is an instance of

arithmetic operator to perform basic arithmetic operations operator

postfix operator to evaluate the value of the operand and then to perform the operation operator

prefix operator to perform the operation and then to evaluate the value of the operand operator

unary operator An operator that has 1 argument to perform a simple function of 1 to 3 arguments operator
if a unary operator uses a prefix notation
then the unary operator appears before its operand

-- prefix or postfix form
example expression equivalent longer expression
a--;
b=a--;
--a;
b=--a; a=a-1;
b=a; a=a-1;
a=a-1;
a=a-1; b=a;
to decrement its operand by one
if a unary operator uses a prefix notation
then the unary operator appears before its operand
unary operator

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